diff --git a/documentation20/en/12.taos-sql/docs.md b/documentation20/en/12.taos-sql/docs.md
index 104757389e715dba70e9cf91c7eaf62822e6710d..7f9754e80fcf97962177d2690c233cae23f8d491 100644
--- a/documentation20/en/12.taos-sql/docs.md
+++ b/documentation20/en/12.taos-sql/docs.md
@@ -88,7 +88,7 @@ Note:
     ```mysql
     USE db_name;
     ```
-    Use/switch database
+    Use/switch database (Invalid when accessing through RESTful connection)
 
 - **Drop a database**
     ```mysql